package cn.edu.just.firstjavaapp.l11;

public class MathDemo {
    public static void main(String[] args) {
        System.out.println(Math.ceil(7.4));
        System.out.println(Math.floor(7.4));
        System.out.println(Math.sqrt(144));
        System.out.println(Math.round(2.5));
    }
}
